Import operation from iPhone to iMac

I'll assume the MBP is running macOS 12 Monterey(?).

Which iPhone?

Which iOS version is the iPhone running?

Exactly what happens when you try to import your photos from the iPhone to the Photos app?

Does the Mac present any sort of error message?

If a simple reboot of your Mac doesn’t fix things, see if the problem still happens in Safe mode. It can take much longer to safe boot (5 min) so be patient.

Click > How to use safe mode on your Mac - Apple Support 

Safe mode will often correct weird software behavior by forcing the OS to do disk repair, clear caches and other housekeeping and disables third-party mods and acceleration. When you're in safe boot, the machine won’t be at its best performance, especially with graphics, but that's expected.

Does the problem persist while in Safe mode?

Please tell us which Mac, model and year you’re having trouble with, and what macOS version you’re running. Find that info by clicking the Apple menu () at the top-left of your screen and then select About This Mac.

(Note- for privacy and security please never post your serial number.)

It will also be helpful to know which version of iOS is running on which iPhone.

Import photos from a camera or phone using Photos on Mac - Apple Support

After you have finished the import to Photos, you can copy or move the Photos library to an external drive as backup.

How many photos are you dealing with?

YuvalRozen wrote:

I'm trying to import a lot of photos from the iPhone to the Mac and it gets stuck and won't transfer, is there a reason this is happening?

None that I know of...

you supply no details.

There are third party apps for more options if you have difficulty

https://imazing.com/

YuvalRozen wrote:

Thank you. Is it paid?

oh, let me click the link for you and take a look. I'll get back to you...